
CRESCENT Topical Workshop
Community Fault Model
August 12-13, 2025
University of Oregon Portland Campus, Portland, OR
Workshop Goals
Workshop Description
We are convening a workshop to solicit input from the community on the CRESCENT Community Fault Model (CFM) v1.0 and discuss improvements for future versions of the CFM. The workshop will highlight the current goals, criteria for inclusion, and status of the CFM. We welcome participants to share new results from both previously known and newly discovered fault systems in both onshore and offshore regions of Cascadia. The workshop will focus on faults in both the upper plate (North America), the lower plate (Juan de Fuca), and the plate interface.
We seek input from workshop participants about how to improve and augment the representation of faults and other structures through focused, regional-scale discussions. We look to solicit feedback from a variety of community members, including from federal, state, and local agencies, from academic institutions, and from utility, consulting, and other private industries. These conversations may highlight where future fault investigations are needed. We hope to gain a better understanding of the community needs, uses, and other considerations as we plan for the next update of the CFM.
Goals:
- Communicate current status of CFM, including criteria for inclusion, faults included in CFM v1.0, and how faults are meshed and represented in 3D.
- Describe working model and planned updates to CFM, highlighting offshore faults.
- Solicit feedback about current faults included in the CFM and new faults (with data) that can be considered for inclusion and meshing.
- Understand additional uses, specific needs, and expectations from the community for the CFM.

Travel & Lodging

August 12-13, 2025
University of Oregon, Portland, OR
Venue
This CRESCENT Topical Workshop will be held at the University of Oregon Portland.
Flights, ground transportation and parking
UO Portland Campus, located in NE Portland, is a 15 minute drive from PDX international airport.
The campus is near stops on bus lines 17, 70, and 75. Routes 17 and 70 operate on 30-minute intervals from downtown Portland, and route 75 operates on 15-minute intervals from SE Portland, connecting with the MAX Blue, Red and Green Lines. Visit the TriMet website for updated schedules and to plan your rides.
For maps, directions, parking and other ground transportation information, see here.
Lodging
McMenamins Kennedy School Hotel, located 1 mile away from the workshop venue, is the host hotel for this workshop. Guests may reserve a hotel room online via this booking link or call the hotel at (503) 249-3983.
Agenda

Notes: All times Pacific Time. Agenda is tentative and subject to change.
Tuesday August 12, 2025
8:30a Check-in and coffee
9:00a Introduction Plenary
10:30a Break
10:45a Community Discussion of CFM Inclusion Criteria
12:00p Lunch
1:00p Instructions for Regional Sessions
1:15p Regional Sessions: Northern Cascadia Forearc & Cascadia Slab/Plate interface
2:30p Break in middle of Regional Sessions
4:00p Summary of Day 1 Regional Sessions
4:30p Applications of the CFM and Needs from Users
5:00p Reception & Optional informal sharing of posters, maps, etc.
6:00p Day 1 adjourns
Wednesday August 13, 2025
8:30 Check-in and coffee
9:00a Welcome Back – Instructions and Agenda for Day 2
9:30a Regional Sessions: Backarc, Intra-arc, and northern Walker Lane & Forearc wedge (offshore)
10:30a Break in middle of Regional Sessions
12:00p Lunch
1:00p Regional Session: Southern Cascadia Forearc
2:30p Break in middle of Regional Session
4:00p Summary of Day 2 Regional Sessions
4:30p Closing Plenary Session
5:00 Workshop concludes
Workshop Planning Committee


Emily Roland
Western Washington University
rolande2@wwu.edu

Scott Bennett
United States Geological Survey
sekbennett@usgs.gov

Colin Amos
Western Washington University
amosc2@wwu.edu